bzfs - BZFlag game server

bzfs [-a linear angular] [-admsg message] [-advertise GROUPNAME,GROUPNAME,...] [-autoTeam] [-b] [-badwords badwordfile] [-ban ip{,ip}*] [-ban ip[,ip]...] [-banfile filename] [-c] [-cache worldCacheURL] [-cacheout filename] [-conf configfile] [-cr] [-d] [-density num] [-disableBots] [+f {good|bad|team||flag-id}[{count}]] [-f {good|bad|flag-id}] [-fb] [-filterCallsigns] [-filterChat] [-filterSimple] [-g] [-groupdb file] [-h] [-handicap] [-help] [-helpmsg file name] [-i interface] [-j] [-lagdrop warn-count] [-lagwarn time/ms] [-masterBanURL URL/s] [-maxidle time/s] [-mp {count|[rogue-count],[red-count],[green-count],[blue-count],[purple-count],[observer-count]}] [-mps {max-score}] [-ms shots] [-mts {max-score}] [-noMasterBanlist] [-p port] [-passdb file] [-passwd password] [-pidfile filename] [-poll variable=value] [-printscore] [-public description] [-publicaddr address[:port]] [-publiclist url] [-q] [+r] [-rabbit [score|killer|random]] [-recbuf size] [-recbufonly] [-recdir directory] [-replay] [-reportfile filename] [-reportpipe command] [-requireudp] [+s flag-count] [-s flag-count] [-sa] [-sb] [-set name value] [-sl id num] [-spamtime time] [-spamwarn warnLimit] [-speedtol factor] [-srvmsg message] [-st time] [-sw count] [-synctime] [-t] [-tftimeout time-limit] [-time time-limit] [-timemanual] [-tk] [-tkkr percent] [-trackplayhistory] [-ts [micros]] [-userdb file] [-vars file] [-version] [-world world-file] [-worldsize world size]

Bzfs is the server for BZFlag, and it must be running to play. It can be run on any system on the network (including a player's system or one without graphics). Terminating the server terminates the game in progress.

-a linear angular

Sets the maximum linear and angular accelerations. The units are somewhat arbitrary so you'll have to experiment to find suitable values. Positive values will set limits to the acceleration and lower they are, greater is the inertia. Zero or negative values disable acceleration limits.

-admsg message

Define a message which will be broadcast to all players every 15 minutes. This option can be used multiple times to define a multiline message.

-advertise groupname,groupname,...

Allows control of who can see this server on the server list. Use: -advertise NONE to make a private server (no one will see the server, but global logins can be used). The default, if -advertise is not specified, is to allow everyone to see the server. Otherwise, your server will only be listed to members of the groups which you specify, eg: -advertise JOE,BOB.

-autoTeam

Automatically assign players to teams when they connect so that there are an equal number of players on all available teams. Players are placed on teams that have the fewest players; otherwise they will be placed on the weakest team. Weakest team is the team with the lowest combined kill ratio.

-b

When -c is supplied, this option randomly rotates the buildings.

-badwords badwordfile

Specify a file that contains bad words that will be used when either -filterCallsigns or -filterChat is enabled.

-ban ip{,ip}*

Prohibits connections from the listed IP addresses. Trailing 255 bytes are treated as mask bytes.

-banfile filename

Specifies the name of a file where bzfs will store the banlist. It will load the banlist from this file when it starts (if the file exists), and write the banlist back to the file when someone gets banned or unbanned. If this option isn't given the banlist will not be saved.

-c

Enables the capture-the-flag style game. By default this allocates one team flag per team. This can be modified see +f team. By default, the free-for-all style is used.

-cache worldCacheURL

Specifies the URL for the world cache file. This is a binary file that clients will attempt to download before getting the world from the bzfs server.

-cacheout filename

Save the currently specified world into a binary cache file and exit.

-conf configfilename

Specifies the name of a configuration file to be used to set all of the bzfs options, rather than setting them on the command line.

-cr

Enables the capture-the-flag style game with random map. You can optionally specify a building density by providing a number (default is 5). One team flag per team is provided, but more can be added thru +f team. By default, the free-for-all style is used.

-d

Increase debugging level. If more -d is given, more debugging info is obtained.

-density num

Specify density for buildings, i.e. the higher the integer number, the more buildings you will get. This applies to automatically generated maps only.

-disableBots

Disallow clients from using the ROGER autopilot or from using robots.

+f {good|bad|teamflag-id}[{count}]

Forces the existence of the given flag. If specified multiple times for the same flag-id, then that many flags will appear. The good argument is equivalent to specifying +f once for each kind of good flag. Same goes for the bad argument. The team argument adds a team flag to each team, assuming that the game style is capture the flag. The optional {count} parameter allows the specification of multiple flags of the same type. Note that the curly braces are required.

-f {good|bad|flag-id}

Disallows random flags of the given type. Required flags given by the +f option are still provided. The bad argument is equivalent to specifying -f once for each kind of bad flag. Same goes for good, but you probably do not want to do that.

An example of running a server with 40 to 50 flags except genocide would

be "+s40 -s50 -f G". Similarly, "+f good{40} +f bad{10} -f G{40}" would give you exactly 40 good flags except genocide and 10 of each bad flag.

-fb

Allow flags on box buildings.

-filterCallsigns

Turn on the filtering of callsigns and email addresses. Callsigns and addresses are compared against bad words provided via -badwords.

-filterChat

Turn on the filtering of chat messages. Messages that contain words listed via a -badwords file are replaced with !@#$%^&* characters.

-filterSimple

By default, all filtering is aggressive, matching much more than what is strictly listed in a -badwords file for convenience. Providing this option will make the -filterCallsigns and -filterChat comparisons exact match only.

-g

Quit after serving one game.

-groupdb file

Load groups from file

-h

Buildings are given random heights.

-handicap

Players are given a handicap advantage based on their ability in relation to the other players. Handicapped players will have faster tanks and shots. The handicap is determined by the player's score in relation to other players.

-help

Shows a help page and lists all the valid flag id's.

-helpmsg file name

Create a help message accessible by /help name, which prints the contents of file. Restricted to 10 lines per help message.

-i interface

Server will listen for and respond to ``pings'' (sent via broadcast) on the given interface. Clients use this to find active servers on the network. This is the TCP/UDP/IP address the server will listen on.

-j

Allows jumping.

-lagdrop warn-count

Kicks players after warn-count lag warnings.

-lagwarn time/ms

Send warnings to players that lag more than time.

-masterBanURL URL/s

Specify alternate URLs for the master ban file to be pulled from. This argument may be provided multiple times.

-maxidle time/s

Kick players that did not play longer than time seconds. Pausing players are not kicked. If a player uttered a word recently, he will be kicked after thrice the given time.

-mp {count|[rogue],[red],[green],[blue],[purple],[observer]}

Sets the maximum number of players, total or per team. A single value sets the total number of players allowed. Five comma separated values set the maximum for each team. If a count is left blank then no limit is set for that team, except for the limit on the total number of players. Both forms may be provided.

-mps max-score

Sets a maximum score for individual players. The first player to reach this score is declared the winner and the game is over.

-ms shots

Allows up to shots simultaneous shots for each player. This is 1 by default.

-mts max-score

Sets a maximum score for teams. The first team to reach this score is declared the winner and the game is over.

-noMasterBanlist

Server will not attempt to load the master ban list from the internet.

-p port

Listen for game connections on port instead of the default port. Use -help to print the default port, or use -d debug printing.

-passdb file

Load passwords from file

-passwd password

Specify a server administrator password for use in remote administration such as /kick, /ban, /mute, etc messages.

-pidfile filename

Specify a file where the server will write its process ID so it may be used for remote administration.

-poll variable=value

Configure several aspects of the in-game polling system

banTime

default number of minutes player should be banned (unspecified, the default is 300)

vetoTime

max seconds authorized user has to abort poll (default is 20)

votePercentage

percentage of players required to affirm a poll (unspecified, the default is 50.1%)

voteRepeatTime

minimum seconds required before a player may request another vote (default is 300)

votesRequired

minimum number of additional votes required to make a vote valid (default is 2)

voteTime

maximum amount of time player has to vote, in seconds (default is 60)

-printscore

Write score to stdout whenever it changes

-public description

Advertise this server on the internet with the given description. By default, a server will respond to broadcast queries, allowing clients to find servers running on the standard port on the local subnet. The -public option causes the server to register itself with a list server, which clients can query to get a list of bzfs servers.

-publicaddr address[:port]

Advertise this server with the given address and port. Only has an effect when used with -public. Normally a server advertises itself at the local address and port. Some servers are not accessible from the internet at this address (for example servers behind a firewall using Network Address Translation). Use this option to specify the address and/or port that internet users should use to access this server.

-publiclist url

Advertise this server on the list servers listed at url. Only has an effect when used with -public. A built-in url is used by default. The BZFlag clients use the same built-in url so, by default, clients will see public servers automatically. This argument may be provided multiple times to publicize a server to multiple list servers.

-q

If specified, the server will not listen for nor respond to ``pings''. BZFlag sends out these pings to give the user a list of available servers. This effectively makes the server private, especially if the -p option is also used.

+r

Makes most shots ricochet. Super bullets, shock waves, and guided missiles do not.

-rabbit [score|killer|random]

Enables the rabbit-hunt style game. By default, the free-for-all style is used. You must specify the algorithm used to pick a new rabbit when the old one dies. The score algorithm uses a modified wins/(wins+losses) score and picks the top scoring player to be the new rabbit. The killer algorithm specifies a reverse tag game where whomever kills the rabbit becomes the new rabbit. The random algorithm randomly picks a new rabbit without regard to score. (The score algorithm is the original behavior.)

-recbuf size

Start with the recording buffer active, with the specified size (in megabytes).

-recbufonly

Disable recording straight to files

-recdir directory

Specify the directory for record and replay files.

-replay

Start the server in replay mode.

-reportfile filename

Write messages to the server admin written using the /report command to this file. If neither -reportfile or -reportpipe is used the /report command will be disabled.

-reportpipe command

Pipe messages to the server admin written using the /report command to this program or shell command. See -reportfile.

-requireudp

Require clients to use parallel UDP. If players fire before opening a UDP channel, kick them off the server.

+s num-flags

The server will have an extra num-flags random super flags available at all times. The -f option can be used to restrict which types of flags will be added. Required flags given by the +f option are not included in the num-flags total.

-s num-flags

The server will have up to num-flags random super flags available at any time. The -f option can be used to restrict which types of flags will be added. Required flags given by the +f option are not included in the num-flags total.

-sa

Antidote flags are provided for players with bad flags.

-sb

Allow spawns on box buildings.

-set name value

Set BZDB variable name to value

-sl id num

Restrict flag id to num shots.

-spamtime time

Minimum <time> between player chat messages that are alike.

-spamwarn warnLimit

Number of warnings a player/spammer gets, who violates -spamtime.

-speedtol factor

Override the default speed auto kick factor. The factor should not be less then 1.0. The factor is a multiplier.

-srvmsg message

Define a server welcome message. This option can be used multiple times to define a multiline message.

-st time

Bad flags are automatically dropped after time seconds.

-sw count

Bad flags are automatically dropped after count wins. Capturing a team flag does not count as a win.

-synctime

Forces all clients to use the same time of day. The current time is determined by the server's clock. This disables the + and - keys on the clients.

-t

Adds teleporters to the game.

-tftimeout time-limit

If the last player in a team leaves while someone else is carrying the team flag, the team flag will not reset until it is captured, or until the player drops it and it is left alone for some time. This option specifies the number of seconds that the flag should be left alone before it is reset. The default value is 30.

-time time-limit

Sets a time limit on the game to time-limit. The game will be stopped time-limit seconds after the first player connects.

-timemanual

When using -time, the countdown will start when the first player joins. With -timemanual, the countdown has to be started manually using the /countdown command. This is useful for matches.

-tk

Changes the default behavior where a player dies when he kills a teammate. When using this option, he will just get a -1 score penalty for the kill but not be killed in game.

-tkkr percent

Kicks players whose team killing to normal kill ratio is greater than percent [1-100]. A start up grace period is given to players.

-trackplayhistory

Has the server track players with good runs of kills and anounces them. Also anounces those players that stop the runs of good players.

-ts [micros]

Include timestamp information in DEBUG output - useful for logging. If micros is specified, microseconds will be added to the timestamp.

-userdb file

Load group associations from file

-vars file

Loads values for game configurable variables from file. Entries are one per line in the form: set variable value. For a list of variables that are configurable, in the BZFlag client, send a message with /set as the text.

-version

Prints the version number of the executable.

-world world-file

Reads a specific BZFlag .bzw world layout file for the game map.

-worldsize world-size

Changes the size for random maps

Notes

Networking

/lagstats Lists network delays, jitter and number of lost resp. out of order packets by player. Example:

MrApathyCream 335 +- 10ms
Gerbol 210 +- 3ms
captain_macgyver 155 +- 0ms  12% lost/ooo

/idlestats

Displays the idle time in seconds for each player. A player is idle when he is dead and has not respawned yet.

MrApathyCream: 0s
Gerbol: 80s
captain_macgyver: 13s

/flaghistory

Lists what flags players have grabbed in the past. Example:

MrApathyCream: (<-) (->) (O) (CB) (M) (B) (JM) (WA)
Gerbol: (L) (GM) (L) (GM) (CL) (ST) (GM) (L)
captain_macgyver: (SB) (SW)

/time, /date

Responds with the current server local time. /date and /time are the exact same. Example:

Tuesday September 08 06:45:54 2004

/uptime

Prints server's current running time in days, hours, mins and secs.

/password {password}

Attempt to gain administrator status Example:

/password supersecretpassword
You are now an administrator!

/clientquery [callsign]

Retrieve client version info from all users, or just CALLSIGN if given Example:

/clientquery MrApathyCream
MrApathyCream: Version: BZFlag 1.11.6-20040729-gnu-linux-SDL

/report {message}

Write a message to the server administrator. Example:

/report I like this map!

/part {message}

Leave the server with a goodbye message (similar to IRC's /part)

/part Gotta go! bye everyone!

/quit {message}

Quit the game with a goodbye message (similar to IRC's /quit)

/quit Gotta go! bye everyone!

/me

This command displays an "action" that is conveyed to another player. It allows for a little more expressivity in the game. For example: "/me is hunting wabbits" turns into a message like "TimRiker is hunting wabbits" that gets displayed differently to other players.

/msg some player some message

This command allows a player to send a message to another player. Similar to using the "," and "." message keys in the game and then selecting your recipient, this will send some message to particular player. The quotes are optional.

/viewreports

View the server's report file.

/record list

List all files in the recordings directory

/record start

Start recording into the memory buffer

/record stop

Stop recording into the memory buffer

/record size <megabytes>

Set the size of the recording memory buffer

/record rate <seconds>

Set the time between game state updates stored in the recording. This will affect the granularity of the 'skips' you can do while replaying a file. It will also make the recording files bigger if it is set to a faster update rate.

/record stats

Display the statistics for the current recording (file or buffered)

/record file <filename>

Start recording directly to a file

/record save <filename> [seconds]

Save the recording buffer into a file. If seconds is specified, then only save that many previous seconds into the file.

/replay list

List all files in the recordings directory

/replay load <filename|#index>

Load the specified recording file by name, or by index (same indices as produced by the 'replay list' command)

/replay play

Start playing the recording. This will oftentimes require that all players connected to the server rejoin (to reload the map, etc...)

/replay loop

Start looping the recording. This will oftentimes require that all players connected to the server rejoin (to reload the map, etc...)

/replay skip [+/- seconds]

If seconds is specified, then skip that amount of time in the recording. Otherwise, skip forwards until there is activity. /replay stats Show the current replay status (filename, position, etc...)

/shutdownserver

Stop serving BZFlag on this server

/superkill

Kick all players off the server

/gameover

Ends the current game

/flag reset {unused}

Repositions flags. If unused is specified, flags carried by tanks are not affected.

/flag up

Removes all flags from the game

/flag show

Shows all flags with information. Example:

0: p:-1 r:1 g:1 1:V s:1 p:159.1x43.2x0.0
1: p:2 r:1 g:1 1:SW s:1 p:209.1x143.2x10.0
2: p:-1 r:1 g:3 1:L s:1 p:-29.1x301.2x0.0

/kick <" Player name" | playerName | #slot> <reason>

Kick a named player off the server. Example:

/kick Gerbol
You were kicked off the server by MrApathyCream

/kick #1 Team killing Kick the player using slot 1 because Team Killing

Note: Slots numbers are only displayed in admins clients. A reason is required

/kill <" Player name" | playerName | #slot> [reason]>

Kill a player just like when shooting.

Example:

/kill Gerbol
kill the player named Gerbol
/kill #4 teamkilling
Kill the player using slot 4 because teamkilling

/playerlist

List player names and IP addresses. Example:

/playerlist
[0]MrApathyCream: 35.23.65.44:4808 udp id
[1]Gerbol: 130.123.1.55:4909 udp id
[2]captain_macgyver: 15.32.122.51:3201 udp id

/ban <ip | ipList | #slot | Player name | playerName > <duration> <reason>

Ban players using the specified IPs for certain length of time from using this server. <duration> can be: 'short' or 'default' for the default ban time 'forever' or 'max' for infinite bans a time in the format <weeks>W<days>D<hours>H<minutes>M just a number of minutes

Examples:

/ban 35.23.43.66 2 cheating
bans player with specific ip for 2 minutes
/ban 35.23.*.*,47.23.17.* 0 Cheaters
bans all ips in this range forever
/ban 36.37.2.8 2h30m "ShootMe" was abusing players
bans specific ip for 2.5 hours with given reason
/ban #5 60m Rejoining
bans player using slot 5 for 60 minutes with given reason
/ban "Tanker" max cheating
bans the player Tanker forever because cheating

Note: Slots numbers are only displayed in admins clients. Duration and reason are required.

/banlist

List all of the IPs currently banned from this server. Example:

/banlist
IP Ban List
------------
35.23.43.66
47.23.17.*

/hostban {hostpat} {duration} {reason}

Ban players using the specified hostnames for a certain length of time from using this server. Example:

/hostban *.foo.com 2 cheating
bans all players from foo.com for 2 minutes

Note: Bzfs must be compiled to use the ADNS asynchronous resolver library in order for this feature to work.

/hostbanlist

List all of the host patterns currently banned from this server.

/say {message}

Generate a public message sent by the server. Example:

/say This is a servermessage

/sendhelp <" Player name" | playerName | #slot> <help page>

Send the specified help page to a user

/send register "Foo"
Send the the help page 'register' to the player Foo

/countdown [seconds]

Starts the countdown sequence for a timed game. The countdown sequence length can optionally be specified in seconds. Examples:

/countdown /countdown 3

/lagwarn

Dynamic change the maximum allowed lag time. Example:

/lagwarn 300

Generally, you start with empty files for the user and password databases. These are maintained by the server, and modifiable through server commands. Users in turn belong to groups. Groups are generally customized to perhaps allow administrative control to trusted users.

There are both local and global groups, i.e. groups that are available across the entire BZFlag network. In setting up a server, you may want to specify global groups that will allow already well known and trusted users to police your server and help maintain control against cheaters and abuse.

The server will automatically create three groups: EVERYONE, VERIFIED, and LOCAL.ADMIN. EVERYONE has ACTIONMESSAGE, ADMINMESSAGESEND, DATE, FLAGHISTORY, IDLESTATS, LAGSTATS, PRIVATEMESSAGE and SPAWN by default. VERIFIED has POLL, POLLKICK, POLLBAN, POLLSET, POLLFLAGRESET, and VOTE. The LOCAL.ADMIN group has almost every permission possible (similar to granting admin powers via /password).

Once the server is running, users can register their callsigns and admins can set their group memberships. Users can use any command that their permissions allow. Every user, registered or not, is part of the EVERYONE group. When a user identifies, they become part of the VERIFIED group.

In addition, there are global groups available that persist network-wide. Users that register their callsigns on the BZFlag website at http://my.B ZFlag.org/bb/ have the ability to globally authenticate by providing a password from within the client. When they authenticate, bzfs will ask the list server if they belong to any of the groups listed in your group database file that are not prefixed with "LOCAL.". If they are a member of a group in question, then they are granted the permissions you specify for that group.

A group database file is set up to contain the specific local and global groups you care to have on your server in addition to default groups and exactly which permissions are granted by each. These files are laid out with one line per group, using the following format:

GROUP_NAME: [*Group] [+|-|!]perm1 [+|-|!]perm2 ... permN

*Group: inhert permissions from existing group "Group"

+perm: add perm to this group

-perm: remove perm from this group

!perm: forbid perm for this group. makes perm inaccessable whether it's granted from another group or not

If no operator is given with a permission it is handled like +perm. A group line for a previously existing group adds to already granted permissions. That way you can spread a group's definition over several lines:

GROUP_NAME: +perm1 +perm2

GROUP_NAME: +perm3 +perm4 -perm5

Group names cannot have spaces, quotes, or other special characters in them. This would be a sample line defining a "cop" group:

COPS: +KICK +SHORTBAN +BANLIST

Now a group USERADMIN with all permissions granted to COPS plus some additional could look like this:

USERADMIN: *COPS +BAN +UNBAN

Probably you want to define customized permissions for the default group "VERIFIED" instead of those automatically asigned by the server:

VERIFIED: -ALL +perm1 +perm2 ...

Or you want to disable the /poll command entirely?

EVERYONE: !POLL

To distinguish between a group that is local and one that is global, use the "LOCAL." prefix as part of the group name, e.g.:

LOCAL.OPERATOR: BANLIST

The available permissions are as follows:

ACTIONMESSAGE /me

ADMINMESSAGERECEIVE player receives messages sent to admin channel

ADMINMESSAGESEND player may send messages on the admin channel

ALL _all_ permissions available

BAN /ban /hostban

BANLIST /banlist /hostbanlist

COUNTDOWN /countdown

ENDGAME /endgame

FLAGHISTORY /flaghistory

FLAGMOD /flag

IDLESTATS /idlestats

INFO not implemented

KICK /kick

LAGSTATS /lagstats

LAGWARN /lagwarn

LISTPERMS not implemented

MUTE /mute

PLAYERLIST /playerlist

POLL /poll

POLLBAN /poll ban

POLLFLAGRESET /poll flagreset

POLLKICK /poll kick

POLLSET /poll set

PRIVATEMESSAGE /msg

REJOIN allows instant rejoin, regardless of _rejoinTime

REMOVEPERMS /removegroup

REQUIREIDENTIFY user must /identify when using this locally registered callsign

SAY /say

SETALL use of all set/remove commands

SETPERMS /setgroup

SETPASSWORD not implemented

SETVAR /set /reset

SHOWOTHERS not implemented

SHUTDOWNSERVER /shutdownserver

SPAWN join game as a player. observers don't need this flag.

SUPERKILL /superkill

TALK allows all players to send messages

UNBAN /unban /hostunban

UNMUTE /unmute

VETO /veto

VOTE /vote

/register {password}

Register your current callsign to the specified password. Passwords must be at least 3 characters long, and the callsign may not contain quotes or other non-alphanumeric/space characters

/identify {password}

Log in to a registered callsign

/setpass {password}

Changes your password

/ghost {callsign} {password}

Kicks off an impersonating player or ghost

/grouplist

Lists the available user groups

/groupperms

Lists the permissions for each group

/showgroup {callsign}

Lists the groups that a registered user is a member of

/setgroup {callsign} {group}

Add a user to a group

/removegroup {callsign} {group}

Remove a user from a group

/reload

Reloads the user, group, and password files (for synchronization between multiple servers on the same machine)

/deregister [callsign]

With an argument, it deregisters another user's callsign. Without, it removes your own registration.

/poll ban|kick|vote|veto [...]

Interact and make requests of the bzflag voting system via the /poll command. The ban and kick subcommands request a vote to respectively ban or kick some player. The playername is expected as the next argument. The vote and veto commands behave identical to the /vote and /veto command counterparts, expecting the same arguments in following. By default, you must be registered to request and vote on a poll.

/vote yes|no

If there is a poll active, this command will place a vote in favor or in opposition to the poll. Multiple languages are supported as a vote argument in addition to "yes" and "no". By default, you must be registered to vote on a poll.

/veto

If there is a poll active, this will cancel the poll. By default, you must be an admin to veto a poll.

/masterban flush|reload

Forces the server to flush any bans from the master server. If reload is specified instead of flush, also reloads bans from the the internet. Local bans are unaffected. This command requires the UNBAN permision.

/mute

Allows a server admin to remove the ability for a player to communicate with other players. Once muted the player may only talk to admins on the server. usage: /mute <#slot> | <playername> This command removes the TALK permission that is enabled by default for all players. (disabling TALK by default would let you run a "silent" server)

/unmute

Allows a server admin to restore the TALK permission to a previously muted player. usage: /unmute <#slot> | <playername>

BZFlag worlds come in two varieties, randomly generated ones, and human designed ones. By default, bzfs uses randomly generated world unless you specify the -world command line or configuration file option. The world file specified by the -world option is a text based file that contains a list of world objects. This file can be created using programs found on sourceforge.net through cvs, or can be hand edited. See the bzw(5) manual page for more details.

bzflag(6), bzadmin(6), bzw(5)